213200031 has 32 divisors (see below), whose sum is σ = 320133888. Its totient is φ = 125072640.

The previous prime is 213200027. The next prime is 213200033. The reversal of 213200031 is 130002312.

It is a happy number.

It is not a de Polignac number, because 213200031 - 2² = 213200027 is a prime.

It is a super-2 number, since 2×213200031² = 90908506436801922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213200033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345235 + ... + 345851.

It is an arithmetic number, because the mean of its divisors is an integer number (10004184).

Almost surely, 2^213200031 is an apocalyptic number.

213200031 is a deficient number, since it is larger than the sum of its proper divisors (106933857).

213200031 is a wasteful number, since it uses less digits than its factorization.

213200031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 213200031 is about 14601.3708602994. The cubic root of 213200031 is about 597.3961524205.

Adding to 213200031 its reverse (130002312), we get a palindrome (343202343).

The spelling of 213200031 in words is "two hundred thirteen million, two hundred thousand, thirty-one".